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<tr class="t-nv-h1"><td colspan="5"> Regular expressions</td></tr>
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<tr class="t-nv-h1"><td colspan="5"> Thread support</td></tr>
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<tr class="t-nv"><td colspan="5"> <strong class="selflink"><tt>&lt;atomic&gt;</tt></strong>
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</div>
<div class="t-navbar-sep"> </div>
</div>
<p>This header is part of the <a href="../atomic.html" title="cpp/atomic">atomic operations</a> library.
</p>
<table class="t-dsc-begin">

<tr>
<td colspan="2"> <table id="toc" class="toc"><tr><td>
<div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1"><a href="atomic.html#Classes"><span class="tocnumber">1</span> <span class="toctext">Classes</span></a></li>
<li class="toclevel-1"><a href="atomic.html#Typedefs"><span class="tocnumber">2</span> <span class="toctext">Typedefs</span></a></li>
<li class="toclevel-1"><a href="atomic.html#Functions"><span class="tocnumber">3</span> <span class="toctext">Functions</span></a></li>
<li class="toclevel-1"><a href="atomic.html#Preprocessor_macros"><span class="tocnumber">4</span> <span class="toctext">Preprocessor macros</span></a></li>
<li class="toclevel-1 tocsection-1">
<a href="atomic.html#Synopsis"><span class="tocnumber">5</span> <span class="toctext">Synopsis</span></a>
<ul>
<li class="toclevel-2 tocsection-2"><a href="atomic.html#Class_std%3A%3Aatomic"><span class="tocnumber">5.1</span> <span class="toctext">Class <span>std::atomic</span></span></a></li>
<li class="toclevel-2 tocsection-3"><a href="atomic.html#Specialization_of_std%3A%3Aatomic_for_integral_types"><span class="tocnumber">5.2</span> <span class="toctext">Specialization of <span>std::atomic</span> for integral types</span></a></li>
<li class="toclevel-2 tocsection-4"><a href="atomic.html#Specialization_of_std%3A%3Aatomic_for_pointer_types"><span class="tocnumber">5.3</span> <span class="toctext">Specialization of <span>std::atomic</span> for pointer types</span></a></li>
<li class="toclevel-2 tocsection-5"><a href="atomic.html#Class_std%3A%3Aatomic_flag"><span class="tocnumber">5.4</span> <span class="toctext">Class <span>std::atomic_flag</span></span></a></li>
</ul>
</li>
</ul>
</td></tr></table>
<h3> <span class="mw-headline" id="Classes">Classes</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic.html" title="cpp/atomic/atomic"> <span class="t-lines"><span>atomic</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomic class template and specializations for bool, integral, and pointer types  <br> <span class="t-mark">(class template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_flag.html" title="cpp/atomic/atomic flag"> <span class="t-lines"><span>atomic_flag</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   the lock-free boolean atomic type  <br> <span class="t-mark">(class)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/memory_order.html" title="cpp/atomic/memory order"> <span class="t-lines"><span>memory_order</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   defines memory ordering constraints for the given atomic operation  <br> <span class="t-mark">(typedef)</span> 
</td>
</tr>

<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Typedefs">Typedefs</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_bool</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">bool</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_char</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">char</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_schar</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">signed</span> <span class="kw4">char</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uchar</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">char</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_short</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">short</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_ushort</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">short</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">int</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">int</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_long</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">long</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_ulong</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_llong</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_ullong</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_char16_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">char16_t</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_char32_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">char32_t</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_wchar_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span><span class="kw4">wchar_t</span><span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_least8_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_least8_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_least8_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_least8_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_least16_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_least16_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_least16_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_least16_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_least32_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_least32_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_least32_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_least32_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_least64_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_least64_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_least64_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_least64_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_fast8_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_fast8_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_fast8_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_fast8_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_fast16_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_fast16_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_fast16_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_fast16_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_fast32_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_fast32_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_fast32_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_fast32_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_int_fast64_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>int_fast64_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uint_fast64_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uint_fast64_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_intptr_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>intptr_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uintptr_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uintptr_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_size_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>size_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_ptrdiff_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>ptrdiff_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_intmax_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>intmax_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr class="t-dsc">
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">atomic_uintmax_t</span></span></span>
</td>
<td>  <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="../atomic/atomic.html"><span class="kw1754">std::<span class="me2">atomic</span></span></a><span class="sy1">&lt;</span>uintmax_t<span class="sy1">&gt;</span></span></span>
</td>
</tr>


<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Functions">Functions</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_is_lock_free.html" title="cpp/atomic/atomic is lock free"> <span class="t-lines"><span>atomic_is_lock_free</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   checks if the atomic type's operations are lock-free  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_store.html" title="cpp/atomic/atomic store"> <span class="t-lines"><span>atomic_store</span><span>atomic_store_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically replaces the value of the atomic object with a non-atomic argument  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_load.html" title="cpp/atomic/atomic load"> <span class="t-lines"><span>atomic_load</span><span>atomic_load_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically obtains the value stored in an atomic object  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_exchange.html" title="cpp/atomic/atomic exchange"> <span class="t-lines"><span>atomic_exchange</span><span>atomic_exchange_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically replaces the value of the atomic object with non-atomic argument and returns the old value of the atomic  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_compare_exchange.html" title="cpp/atomic/atomic compare exchange"> <span class="t-lines"><span>atomic_compare_exchange_weak</span><span>atomic_compare_exchange_weak_explicit</span><span>atomic_compare_exchange_strong</span><span>atomic_compare_exchange_strong_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically compares the value of the atomic object with non-atomic argument and performs atomic exchange if equal or atomic load if not  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_fetch_add.html" title="cpp/atomic/atomic fetch add"> <span class="t-lines"><span>atomic_fetch_add</span><span>atomic_fetch_add_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   adds a non-atomic value to an atomic object and obtains the previous value of the atomic  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_fetch_sub.html" title="cpp/atomic/atomic fetch sub"> <span class="t-lines"><span>atomic_fetch_sub</span><span>atomic_fetch_sub_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   subtracts a non-atomic value from an atomic object and obtains the previous value of the atomic  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_fetch_and.html" title="cpp/atomic/atomic fetch and"> <span class="t-lines"><span>atomic_fetch_and</span><span>atomic_fetch_and_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   replaces the atomic object with the result of logical AND with a non-atomic argument and obtains the previous value of the atomic  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_fetch_or.html" title="cpp/atomic/atomic fetch or"> <span class="t-lines"><span>atomic_fetch_or</span><span>atomic_fetch_or_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   replaces the atomic object with the result of logical OR with a non-atomic argument and obtains the previous value of the atomic  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_fetch_xor.html" title="cpp/atomic/atomic fetch xor"> <span class="t-lines"><span>atomic_fetch_xor</span><span>atomic_fetch_xor_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   replaces the atomic object with the result of logical XOR with a non-atomic argument and obtains the previous value of the atomic   <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_flag_test_and_set.html" title="cpp/atomic/atomic flag test and set"> <span class="t-lines"><span>atomic_flag_test_and_set</span><span>atomic_flag_test_and_set_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically sets the flag to <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> and returns its previous value  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_flag_clear.html" title="cpp/atomic/atomic flag clear"> <span class="t-lines"><span>atomic_flag_clear</span><span>atomic_flag_clear_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   atomically sets the value of the flag to <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span>  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_init.html" title="cpp/atomic/atomic init"> <span class="t-lines"><span>atomic_init</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   non-atomic initialization of a default-constructed atomic object  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/kill_dependency.html" title="cpp/atomic/kill dependency"> <span class="t-lines"><span>kill_dependency</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   removes the specified object from the <span class="t-lc"><a href="../atomic/memory_order.html" title="cpp/atomic/memory order">std::memory_order_consume</a></span> dependency tree  <br> <span class="t-mark">(function template)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_thread_fence.html" title="cpp/atomic/atomic thread fence"> <span class="t-lines"><span>atomic_thread_fence</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   generic memory order-dependent fence synchronization primitive  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/atomic_signal_fence.html" title="cpp/atomic/atomic signal fence"> <span class="t-lines"><span>atomic_signal_fence</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   fence between a thread and a signal handler executed in the same thread  <br> <span class="t-mark">(function)</span> 
</td>
</tr>

<tr>
<td colspan="2"> <h3> <span class="mw-headline" id="Preprocessor_macros">Preprocessor macros</span>
</h3>
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/ATOMIC_VAR_INIT.html" title="cpp/atomic/ATOMIC VAR INIT"> <span class="t-lines"><span>ATOMIC_VAR_INIT</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   constant initialization of an atomic variable of static storage duration  <br> <span class="t-mark">(function macro)</span> 
</td>
</tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div">
<div><a href="../atomic/ATOMIC_FLAG_INIT.html" title="cpp/atomic/ATOMIC FLAG INIT"> <span class="t-lines"><span>ATOMIC_FLAG_INIT</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>   initializes an <span class="t-lc"><a href="../atomic/atomic_flag.html" title="cpp/atomic/atomic flag">std::atomic_flag</a></span> to <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span>  <br> <span class="t-mark">(macro constant)</span> 
</td>
</tr>
</table>
<h3>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Synopsis">edit</a>]</span> <span class="mw-headline" id="Synopsis">Synopsis</span>
</h3>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
    <span class="kw1">typedef</span> <span class="kw2">enum</span> memory_order <span class="br0">{</span>
        memory_order_relaxed,
        memory_order_consume,
        memory_order_acquire,
        memory_order_release,
        memory_order_acq_rel,
        memory_order_seq_cst
    <span class="br0">}</span> memory_order<span class="sy4">;</span>
 
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T kill_dependency<span class="br0">(</span>T y<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co1">// lock-free property</span>
    <span class="co2">#define ATOMIC_BOOL_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_CHAR_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_CHAR16_T_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_CHAR32_T_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_WCHAR_T_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_SHORT_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_INT_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_LONG_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_LLONG_LOCK_FREE /*unspecified*/</span>
    <span class="co2">#define ATOMIC_POINTER_LOCK_FREE /*unspecified*/</span>
 
    <span class="co1">// generic atomic type</span>
    <span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">struct</span> atomic<span class="sy4">;</span>
    <span class="co1">// specialization for integral types</span>
    <span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">struct</span> atomic<span class="sy1">&lt;</span><span class="coMULTI">/*integral*/</span><span class="sy1">&gt;</span><span class="sy4">;</span>
    <span class="co1">// specialization for pointers</span>
    <span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">struct</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy4">;</span>
 
    <span class="co1">// named typedefs</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">bool</span><span class="sy1">&gt;</span> atomic_bool<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">char</span><span class="sy1">&gt;</span> atomic_char<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">signed</span> <span class="kw4">char</span><span class="sy1">&gt;</span> atomic_schar<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">char</span><span class="sy1">&gt;</span> atomic_uchar<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">short</span><span class="sy1">&gt;</span> atomic_short<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">short</span><span class="sy1">&gt;</span> atomic_ushort<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">int</span><span class="sy1">&gt;</span> atomic_int<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">int</span><span class="sy1">&gt;</span> atomic_uint<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">long</span><span class="sy1">&gt;</span> atomic_long<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span><span class="sy1">&gt;</span> atomic_ulong<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span> atomic_llong<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span><span class="sy1">&gt;</span> atomic_ullong<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">char16_t</span><span class="sy1">&gt;</span> atomic_char16_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">char32_t</span><span class="sy1">&gt;</span> atomic_char32_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span><span class="kw4">wchar_t</span><span class="sy1">&gt;</span> atomic_wchar_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_least8_t<span class="sy1">&gt;</span> atomic_int_least8_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_least8_t<span class="sy1">&gt;</span> atomic_uint_least8_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_least16_t<span class="sy1">&gt;</span> atomic_int_least16_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_least16_t<span class="sy1">&gt;</span> atomic_uint_least16_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_least32_t<span class="sy1">&gt;</span> atomic_int_least32_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_least32_t<span class="sy1">&gt;</span> atomic_uint_least32_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_least64_t<span class="sy1">&gt;</span> atomic_int_least64_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_least64_t<span class="sy1">&gt;</span> atomic_uint_least64_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_fast8_t<span class="sy1">&gt;</span> atomic_int_fast8_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_fast8_t<span class="sy1">&gt;</span> atomic_uint_fast8_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_fast16_t<span class="sy1">&gt;</span> atomic_int_fast16_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_fast16_t<span class="sy1">&gt;</span> atomic_uint_fast16_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_fast32_t<span class="sy1">&gt;</span> atomic_int_fast32_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_fast32_t<span class="sy1">&gt;</span> atomic_uint_fast32_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>int_fast64_t<span class="sy1">&gt;</span> atomic_int_fast64_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uint_fast64_t<span class="sy1">&gt;</span> atomic_uint_fast64_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>intptr_t<span class="sy1">&gt;</span> atomic_intptr_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uintptr_t<span class="sy1">&gt;</span> atomic_uintptr_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>size_t<span class="sy1">&gt;</span> atomic_size_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>ptrdiff_t<span class="sy1">&gt;</span> atomic_ptrdiff_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>intmax_t<span class="sy1">&gt;</span> atomic_intmax_t<span class="sy4">;</span>
    <span class="kw1">typedef</span> atomic<span class="sy1">&lt;</span>uintmax_t<span class="sy1">&gt;</span> atomic_uintmax_t<span class="sy4">;</span>
 
    <span class="co1">// general operations on atomic types</span>
    <span class="co1">// /*atomic-type*/ is either atomic&lt;T&gt; or one of the typedefs</span>
    <span class="co1">// (if it's atomic&lt;T&gt;, then template&lt;class T&gt; is implied)</span>
    <span class="kw4">bool</span> atomic_is_lock_free<span class="br0">(</span><span class="kw4">const</span> <span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_is_lock_free<span class="br0">(</span><span class="kw4">const</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_init<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_init<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_store<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_store<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_store_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_store_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_load<span class="br0">(</span><span class="kw4">const</span> <span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_load<span class="br0">(</span><span class="kw4">const</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_load_explicit<span class="br0">(</span><span class="kw4">const</span> <span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_load_explicit<span class="br0">(</span><span class="kw4">const</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_exchange<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_exchange<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_exchange_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T atomic_exchange_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_weak<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_weak<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_strong<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_strong<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_weak_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T,
                                               memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_weak_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T.
                                               <span class="me1">memory_order</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare<span class="br0">)</span>exchange_strong_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T,
                                                 memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_compare_exchange_strong_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-type*/</span> <span class="sy2">*</span>, T<span class="sy2">*</span>, T,
                                                 memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co1">// templated operations on atomic types (declared, but not defined)</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_add<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_add<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_add_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_add_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_sub<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_sub<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_sub_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_sub_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_and<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_and<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_and_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_and_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_or<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_or<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_or_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_or_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_xor<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_xor<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_xor_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T atomic_fetch_xor_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy2">*</span>, T, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co1">// arithmetic operations on atomic types</span>
    <span class="co1">// /*atomic-integral*/ is either atomic&lt;T&gt; or one of the typedefs</span>
    <span class="co1">// (if it's atomic&lt;T&gt;, then template&lt;&gt; is implied)</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_add<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_add<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_add_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span>,
                                            memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_add_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span>,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_sub<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_sub<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_sub_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> ,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_sub_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> ,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_and<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_and<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_and_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> ,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_and_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> ,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_or<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                 <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_or<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                 <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_or_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                          <span class="coMULTI">/*integral*/</span> ,
                                          memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_or_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                          <span class="coMULTI">/*integral*/</span> ,
                                          memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_xor<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_xor<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                  <span class="coMULTI">/*integral*/</span> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_xor_explicit<span class="br0">(</span><span class="kw4">volatile</span> <span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> , memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> atomic_fetch_xor_explicit<span class="br0">(</span><span class="coMULTI">/*atomic-integral*/</span> <span class="sy2">*</span>,
                                           <span class="coMULTI">/*integral*/</span> ,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co1">// partial specializations for pointers</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_add<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_add<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_add_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>,
                                 ptrdiff_t, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_add_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_sub<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_sub<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_sub_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>,
                                 ptrdiff_t, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
    T<span class="sy2">*</span> atomic_fetch_sub_explicit<span class="br0">(</span>atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span><span class="sy2">*</span>, ptrdiff_t, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co1">// initialization</span>
    <span class="co2">#define ATOMIC_VAR_INIT(value) /*see description*/</span>
 
    <span class="co1">// flag type and operations</span>
    <span class="kw1">struct</span> atomic_flag<span class="sy4">;</span>
 
    <span class="kw4">bool</span> atomic_flag_test_and_set<span class="br0">(</span><span class="kw4">volatile</span> atomic_flag<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_flag_test_and_set<span class="br0">(</span>atomic_flag<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_flag_test_and_set_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic_flag<span class="sy2">*</span>,
                                           memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> atomic_flag_test_and_set_explicit<span class="br0">(</span>atomic_flag<span class="sy2">*</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span><span class="kw4">volatile</span> atomic_flag<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span>atomic_flag<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span><span class="kw4">volatile</span> atomic_flag<span class="sy2">*</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span>atomic_flag<span class="sy2">*</span>, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    <span class="co2">#define ATOMIC_FLAG_INIT /*see description*/</span>
 
    <span class="co1">// fences</span>
    <span class="kw4">extern</span> <span class="st0">"C"</span> <span class="kw4">void</span> atomic_thread_fence<span class="br0">(</span>memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">extern</span> <span class="st0">"C"</span> <span class="kw4">void</span> atomic_signal_fence<span class="br0">(</span>memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></pre></div></div>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Class std::atomic">edit</a>]</span> <span class="mw-headline" id="Class_std::atomic">Class <span class="t-lc"><a href="../atomic/atomic.html" title="cpp/atomic/atomic">std::atomic</a></span></span>
</h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">struct</span> atomic <span class="br0">{</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span>T, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span>T, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator T<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator T<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T exchange<span class="br0">(</span>T, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T exchange<span class="br0">(</span>T, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                               memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                               memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                                 memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                                 memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy3">&amp;</span>, T,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    atomic<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span>
    <span class="kw4">constexpr</span> atomic<span class="br0">(</span>T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    atomic<span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    T operator<span class="sy1">=</span><span class="br0">(</span>T<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T operator<span class="sy1">=</span><span class="br0">(</span>T<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Specialization of std::atomic for integral types">edit</a>]</span> <span class="mw-headline" id="Specialization_of_std::atomic_for_integral_types">Specialization of <span class="t-lc"><a href="../atomic/atomic.html" title="cpp/atomic/atomic">std::atomic</a></span> for integral types</span>
</h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span><span class="sy1">&lt;&gt;</span> <span class="kw1">struct</span> atomic<span class="sy1">&lt;</span><span class="coMULTI">/*integral*/</span><span class="sy1">&gt;</span> <span class="br0">{</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator <span class="coMULTI">/*integral*/</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator <span class="coMULTI">/*integral*/</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> exchange<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                          memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> exchange<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                          memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                               memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                               memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                                 memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                                 memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="sy3">&amp;</span>, <span class="coMULTI">/*integral*/</span>,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_add<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_add<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_sub<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_sub<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_and<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_and<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_or<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                          memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_or<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                          memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_xor<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> fetch_xor<span class="br0">(</span><span class="coMULTI">/*integral*/</span>,
                           memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    atomic<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span>
    <span class="kw4">constexpr</span> atomic<span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    atomic<span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">+</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">+</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">-</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy2">-</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">&amp;</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">&amp;</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">|</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">|</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">^</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="coMULTI">/*integral*/</span> operator<span class="sy3">^</span><span class="sy1">=</span><span class="br0">(</span><span class="coMULTI">/*integral*/</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Specialization of std::atomic for pointer types">edit</a>]</span> <span class="mw-headline" id="Specialization_of_std::atomic_for_pointer_types">Specialization of <span class="t-lc"><a href="../atomic/atomic.html" title="cpp/atomic/atomic">std::atomic</a></span> for pointer types</span>
</h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">struct</span> atomic<span class="sy1">&lt;</span>T<span class="sy2">*</span><span class="sy1">&gt;</span> <span class="br0">{</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> is_lock_free<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span>T<span class="sy2">*</span>, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> store<span class="br0">(</span>T<span class="sy2">*</span>, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> load<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator T<span class="sy2">*</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    operator T<span class="sy2">*</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> exchange<span class="br0">(</span>T<span class="sy2">*</span>, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> exchange<span class="br0">(</span>T<span class="sy2">*</span>, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>, memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>, memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>, memory_order, memory_order<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>, memory_order, memory_order<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_weak<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>,
                               memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> compare_exchange_strong<span class="br0">(</span>T<span class="sy2">*</span><span class="sy3">&amp;</span>, T<span class="sy2">*</span>,
                                 memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> fetch_add<span class="br0">(</span>ptrdiff_t, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> fetch_add<span class="br0">(</span>ptrdiff_t, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> fetch_sub<span class="br0">(</span>ptrdiff_t, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> fetch_sub<span class="br0">(</span>ptrdiff_t, memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
    atomic<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span>
    <span class="kw4">constexpr</span> atomic<span class="br0">(</span>T<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    atomic<span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic<span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy1">=</span><span class="br0">(</span>T<span class="sy2">*</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy1">=</span><span class="br0">(</span>T<span class="sy2">*</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="kw4">int</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">++</span><span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">--</span><span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">+</span><span class="sy1">=</span><span class="br0">(</span>ptrdiff_t<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">+</span><span class="sy1">=</span><span class="br0">(</span>ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">-</span><span class="sy1">=</span><span class="br0">(</span>ptrdiff_t<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    T<span class="sy2">*</span> operator<span class="sy2">-</span><span class="sy1">=</span><span class="br0">(</span>ptrdiff_t<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<h4>
<span class="editsection">[<a href="http%3A//en.cppreference.com/mwiki/index.php" title="Edit section: Class std::atomic flag">edit</a>]</span> <span class="mw-headline" id="Class_std::atomic_flag">Class <span class="t-lc"><a href="../atomic/atomic_flag.html" title="cpp/atomic/atomic flag">std::atomic_flag</a></span></span>
</h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">typedef</span> <span class="kw1">struct</span> atomic_flag <span class="br0">{</span>
    <span class="kw4">bool</span> test_and_set<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">bool</span> test_and_set<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> clear<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw4">volatile</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    <span class="kw4">void</span> clear<span class="br0">(</span>memory_order <span class="sy1">=</span> memory_order_seq_cst<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
    atomic_flag<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span>
    atomic_flag<span class="br0">(</span><span class="kw4">const</span> atomic_flag<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic_flag<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic_flag<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
    atomic_flag<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> atomic_flag<span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw4">volatile</span> <span class="sy1">=</span> delete<span class="sy4">;</span>
<span class="br0">}</span> atomic_flag<span class="sy4">;</span></pre></div></div>

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